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Engines and Components› Pistons and Piston Rings

Namura

TOP END KIT 79.96/+0.01 11:1 POL

$236.95 $195.14 Save $41.81

SKU: NA-50081-BK

In Stock
In Stock
Ships by Nov 2
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
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Overview

The Namura Top-End Repair Kit is a comprehensive solution for engine rebuilding, designed to provide all necessary components for a top-end overhaul. This kit ensures optimal engine performance and durability. It features pistons with a 79.96mm bore size, a +0.01mm over standard size, and a 11:1 compression ratio. The pistons are constructed with a hard-anodized crown and MOS2 (Teflon/Molybdenum) coated skirts for enhanced heat transfer, reduced friction, and increased wear resistance.

The kit includes pistons, rings, and a top-end gasket set manufactured to OE specifications, ensuring a perfect fit without modifications. It also comes with wrist pins, circlips, and needle bearings when required. Namura's commitment to quality is evident in their gasket materials, selected for their resistance to temperature, oil, fuel, and coolant, meeting or exceeding OE performance standards.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandNamura
Part NumberNA-50081-BK
CategoryPiston kits & Components

Videos

HOW TO REMOVE AND INSTALL PISTONS IN POLARIS SPORTSMAN 800

HOW TO REMOVE AND INSTALL PISTONS IN POLARIS SPORTSMAN 800

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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